A Demographer Wants to Measure Life Expectancy in Countries 1

question 32

Multiple Choice

A demographer wants to measure life expectancy in countries 1 and 2. Let µ₁ and µ₂ denote the mean life expectancy in countries 1 and 2, respectively. Specify the hypothesis to determine if life expectancy in country 1 is more than 10 years lower than in country 2.

• A) H₀: µ₁ - µ₂ ≤ 10, H_A: µ₁ - µ₂ > 10
• B) H₀: µ₁ - µ₂ ≥ 10, H_A: µ₁ - µ₂ < 10
• C) H₀: µ₁ - µ₂ ≤ -10, H_A: µ₁ - µ₂ > −10
• D) H₀: µ₁ - µ₂ ≥ -10, H_A: µ₁ - µ₂ < −10

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Definitions:

Olfactory Adaptation

The process by which the sense of smell becomes accustomed to and less sensitive to a constant smell over time.

Sustentacular Cells

Supportive cells found in the germinal epithelium of the testis, assisting in the nourishment and regulation of sperm-producing cells.

Gustatory Hairs

Microscopic hairs located on taste buds that are sensitive to tastants in food, leading to the perception of taste.

Gustatory Cells

Gustatory cells are specialized epithelial cells located within the taste buds of the tongue, responsible for the perception of taste stimuli.